65946631 has 4 divisors (see below), whose sum is σ = 65970064. Its totient is φ = 65923200.

The previous prime is 65946619. The next prime is 65946653. The reversal of 65946631 is 13664956.

65946631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 65946631 - 2⁵ = 65946599 is a prime.

It is a super-2 number, since 2×65946631² = 8697916280500322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65946611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6810 + ... + 13351.

It is an arithmetic number, because the mean of its divisors is an integer number (16492516).

Almost surely, 2^65946631 is an apocalyptic number.

65946631 is a deficient number, since it is larger than the sum of its proper divisors (23433).

65946631 is a wasteful number, since it uses less digits than its factorization.

65946631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23432.

The product of its digits is 116640, while the sum is 40.

The square root of 65946631 is about 8120.7531054700. The cubic root of 65946631 is about 404.0150449418.

It can be divided in two parts, 6594 and 6631, that added together give a square (13225 = 115²).

The spelling of 65946631 in words is "sixty-five million, nine hundred forty-six thousand, six hundred thirty-one".